Tornado Watch 142

Issued

Mar 30, 2008, 10:52 PM CDT (03:52 UTC)

Expired

Mar 31, 2008, 5:00 AM CDT

In force

6 hr

Issued by

the Storm Prediction Center

Largest hail expected

2.5 in

Strongest gust expected

60 kt

The Vance AFB radar (KVNX), 68 km from the middle of the area, began a volume at 03:48 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

Two or more tornadoes

40%

One or more EF2 to EF5 tornadoes

20%

Ten or more severe wind reports

30%

One or more gusts of 65 knots or more

30%

Ten or more severe hail reports

40%

One or more hailstones of 2 inches or more

30%

Six or more combined severe hail and wind reports

70%

• Mesoscale Discussion 506Mar 30, 8:50 PM CDT
• Mesoscale Discussion 508Mar 31, 1:17 AM CDT
• Mesoscale Discussion 511Mar 31, 2:52 AM CDT
• Mesoscale Discussion 513Mar 31, 4:00 AM CDT
• Mesoscale Discussion 514Mar 31, 4:29 AM CDT

000
WWUS20 KWNS 310352
SEL2  
SPC WW 310352
OKZ000-310800-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 142
NWS STORM PREDICTION CENTER NORMAN OK
1055 PM CDT SUN MAR 30 2008

THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF 

       A LARGE PORTION OF CENTRAL OKLAHOMA

EFFECTIVE THIS SUNDAY NIGHT AND MONDAY MORNING FROM 1055 PM UNTIL
300 AM CDT.

TORNADOES...HAIL TO 2.5 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 65 STATUTE
MILES EAST AND WEST OF A LINE FROM 25 MILES NORTH NORTHWEST OF
PONCA CITY OKLAHOMA TO 15 MILES SOUTHEAST OF OKLAHOMA CITY
OKLAHOMA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU2).

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH
AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR
THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
AND POSSIBLE WARNINGS.

OTHER WATCH INFORMATION...THIS TORNADO WATCH REPLACES TORNADO
WATCH NUMBER 140. WATCH NUMBER 140 WILL NOT BE IN EFFECT AFTER
1055 PM CDT. CONTINUE...WW 141...

DISCUSSION...LONG LIVED POTENTIALLY TORNADIC SUPERCELLS CONTINUE
SLOWLY EWD ACROSS W CENTRAL OK. WITH THE INCREASE OF THE LOW LEVEL
JET TO 50KT IT APPEARS THAT THE TORNADO THREAT COULD CONTINUE
SEVERAL MORE HOURS AS THE STORMS TRACK E/ENEWD ACROSS CENTRAL OK.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 26015.


...HALES

Tornado Watches in Oklahoma, 2008Every tornado watch in 2008

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.